app.js

/**
 * Created by trigkit4 on 2016/10/27.
 */
//app.js

App( {
    onLaunch: function() {
        //调用API从本地缓存中获取数据
        var logs = wx.getStorageSync( 'logs' ) || [];
        logs.unshift( Date.now() );
        try {
            wx.clearStorageSync()
        } catch (e) {}
        wx.setStorageSync( 'logs', logs );
    },
    getUserInfo: function( cb ) {
        var that = this;
        if( this.globalData.userInfo ) {
            typeof cb == "function" && cb( this.globalData.userInfo );
        } else {
            //调用登录接口
            wx.login( {
                success: function() {
                    wx.getUserInfo( {
                        success: function( res ) {
                            that.globalData.userInfo = res.userInfo;
                            typeof cb == "function" && cb( that.globalData.userInfo );
                        }
                    })
                }
            })
        }
    },
    globalData: {
        userInfo: null
    }

});